The ratio of Bitcoin speculation to trade is very high; it's less a currency than a peer-to-peer gambling system, the economic equivalent of a penny stock that

The ratio of Bitcoin speculation to trade is very high; it's less a currency than a peer-to-peer gambling system, the economic equivalent of a penny stock that is being repeatedly pumped and dumped. If you're a merchant, you certainly don't want to be holding Bitcoins. Leave them to the gamblers.